Free Printable Math Worksheets Math Games on-line, timed Basic Facts addition, subtraction and multiplication quizzes (Good for any grade - improve basic skills) Math Brain Teaser (Grade 3 and up) Developing Your Intuition For Math Our initial exposure to an idea shapes our intuition. And our intuition impacts how much we enjoy a subject. What do I mean? Nerd Paradise : Calculating Base 10 Logarithms in Your Head Calculating base 10 logarithms in your head on the fly is a lot easier than you may think. It is simply a matter of memorization and a little estimation... First memorize all the single digit base 10 logs. Don't worry, it's not as painful as it sounds.

Mathematics Fun, Fact, Fiction, Function, Fantasy Here is a collection of mathematical activities and curiosities...enjoy them! BRAND NEW 2008 Line of Fractal Imagery -- 594 Images -- Oh Wow! ---> Show me the fractals! Extensive Graphical Spherical Harmonic Study --- 640+ Images ---> Take me there!

The Thirty Greatest Mathematicians Click for a discussion of certain omissions. Please send me e-mail if you believe there's a major flaw in my rankings (or an error in any of the biographies). Obviously the relative ranks of, say Fibonacci and Ramanujan, will never satisfy everyone since the reasons for their "greatness" are different. 6174 6174 is known as Kaprekar's constant[1][2][3] after the Indian mathematician D. R. Kaprekar. - StumbleUpon The length of the polygonal spiral is found by noting that the ratio of inradius to circumradius of a regular polygon of sides is The total length of the spiral for an

The Ultimate TI-89 FAQ & Manual This FAQ should detail many of the frequently asked TI-89 questions and related issues that are posted on our TI-89 Forum . If you have another question not answered here or that you want more detail about, simply start a new thread in the support section of our TI-89 Forum . If you're looking for a TI-89 manual, you can view the PDF here .

Math for Everyone Skip Discover Education Main Navigation Forgot username or password? Passcode/Create New User Help Prime numbers Version for printing Prime numbers and their properties were first studied extensively by the ancient Greek mathematicians. The mathematicians of Pythagoras's school (500 BC to 300 BC) were interested in numbers for their mystical and numerological properties. They understood the idea of primality and were interested in perfect and amicable numbers. A perfect number is one whose proper divisors sum to the number itself. e.g. The number 6 has proper divisors 1, 2 and 3 and 1 + 2 + 3 = 6, 28 has divisors 1, 2, 4, 7 and 14 and 1 + 2 + 4 + 7 + 14 = 28.

Nerd Paradise : Divisibility Rules for Arbitrary Divisors It's rather obvious when a number is divisible by 2 or 5, and some of you probably know how to tell if a number is divisible by 3, but it is possible to figure out the division 'rule' for any number. Here are the rules for 2 through 11... The last digit is divisible by 2. The sum of all the digits in the number is divisible by 3. Math Sites for Kids A+ Math This site has plenty of activities and games to help beginning to intermediate math students improve their skills. Flash cards, concentration games, more. AAA Math Designed for grades K-8, this comprehensive math resource contains hundreds of pages of basic math skills and randomly-created interactive practice activities. Ask Dr. Math This is a huge resource of answers to math questions for elementary to college students. If you have a question not covered, you can ask Dr.

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